Renovation of a bridge / tunnel in Oak Grove, Minnesota. Completed plans call for the renovation of a bridge / tunnel.

**As of April 19, 2024 project was awarded to North Pine Aggregate, Inc., awarded amount is $2,763,864.88.** Street/Roadway Reconstruction , Round-a-Bout Construction CSAH 7 at CSAH 22 Reconstruction/Roundabout Project no- 021150-000 Anoka County (County) authorized this scope of service. In order to assist the design team in preparing plans and specifications, we have developed recommendations for subgrade improvements, road widening, and pavement design. As such, we have completed a subsurface exploration program and prepared a geotechnical report for the referenced site. This stated purpose was a significant factor in determining the scope and level of service provided. Should the purpose of the report change the report immediately ceases to be valid and use of it without WSBs prior review and written authorization should be at the users sole risk. Our authorized scope of work has been limited to: 1. Clearing underground utilities utilizing Gopher State One Call. 2. Mobilization / demobilization of a truck mounted drill rig. 3. Drilling 21 standard penetration borings to about 10-foot depths. 4. Sealing the borings per Minnesota Department of Health procedures. 5. Perform soil classification and analysis. 6. Review of available project information and geologic data. 7. Providing this geotechnical report containing: a. Summary of our findings. b. Discussion of subsurface soil and groundwater conditions and how they may affect the proposed pavements. c. Estimated R-value of the soils. d. Recommended pavement section. e. A discussion of soils for use as structural fill and site fill